Thomas JB - Search Results

1

NIST/NCI Micronutrients Measurement Quality Assurance Program: measurement repeatabilities and reproducibilities for fat-soluble vitamin-related compounds in human sera.

Duewer DL, Thomas JB, Kline MC, MacCrehan WA, Schaffer R, Sharpless KE, May WE, Crowell JA. Duewer DL, et al. Among authors: thomas jb. Anal Chem. 1997 Apr 1;69(7):1406-13. doi: 10.1021/ac9607727. Anal Chem. 1997. PMID: 9105181

2

Preparation and value assignment of standard reference material 968e fat-soluble vitamins, carotenoids, and cholesterol in human serum.

Thomas JB, Duewer DL, Mugenya IO, Phinney KW, Sander LC, Sharpless KE, Sniegoski LT, Tai SS, Welch MJ, Yen JH. Thomas JB, et al. Anal Bioanal Chem. 2012 Jan;402(2):749-62. doi: 10.1007/s00216-011-5447-8. Epub 2011 Oct 21. Anal Bioanal Chem. 2012. PMID: 22015475

3

Characterization of NIST food-matrix Standard Reference Materials for their vitamin C content.

Thomas JB, Yen JH, Sharpless KE. Thomas JB, et al. Anal Bioanal Chem. 2013 May;405(13):4539-48. doi: 10.1007/s00216-013-6891-4. Epub 2013 Mar 26. Anal Bioanal Chem. 2013. PMID: 23529413

4

Isotope dilution liquid chromatography - mass spectrometry methods for fat- and water-soluble vitamins in nutritional formulations.

Phinney KW, Rimmer CA, Thomas JB, Sander LC, Sharpless KE, Wise SA. Phinney KW, et al. Among authors: thomas jb. Anal Chem. 2011 Jan 1;83(1):92-8. doi: 10.1021/ac101950r. Epub 2010 Nov 30. Anal Chem. 2011. PMID: 21117618

5

Lessons from the NIST micronutrients quality assurance program for vitamin C, 1993 to 2015: sample stability, assay reproducibility, and use of controls to improve comparability.

Duewer DL, Thomas JB, Sharpless KE, Margolis SA. Duewer DL, et al. Among authors: thomas jb. Anal Bioanal Chem. 2021 Jan;413(2):289-298. doi: 10.1007/s00216-020-03021-9. Epub 2020 Nov 2. Anal Bioanal Chem. 2021. PMID: 33140124 Free PMC article.

6

Micronutrients Measurement Quality Assurance Program: helping participants use interlaboratory comparison exercise results to improve their long-term measurement performance.

Duewer DL, Kline MC, Sharpless KE, Thomas JB, Gary KT, Sowell AL. Duewer DL, et al. Among authors: thomas jb. Anal Chem. 1999 May 1;71(9):1870-8. doi: 10.1021/ac981074k. Anal Chem. 1999. PMID: 10330911

7

NIST micronutrients measurement quality assurance program: characterizing individual participant measurement performance over time.

Duewer DL, Kline MC, Sharpless KE, Thomas JB, Stacewicz-Sapuntzakis M, Sowell AL. Duewer DL, et al. Among authors: thomas jb. Anal Chem. 2000 Aug 1;72(15):3611-9. doi: 10.1021/ac991481b. Anal Chem. 2000. PMID: 10952550

8

NIST micronutrients measurement quality assurance program: characterizing the measurement community's performance over time.

Duewer DL, Kline MC, Sharpless KE, Thomas JB. Duewer DL, et al. Among authors: thomas jb. Anal Chem. 2000 Sep 1;72(17):4163-70. doi: 10.1021/ac991480j. Anal Chem. 2000. PMID: 10994979

9

Certification of fat-soluble vitamins, carotenoids, and cholesterol in human serum: Standard Reference Material 968b.

Thomas JB, Kline MC, Schiller SB, Ellerbe PM, Sniegoski LT, Duewer DL, Sharpless KE. Thomas JB, et al. Anal Bioanal Chem. 1996 Aug;356(1):1-9. doi: 10.1007/s0021663560001. Anal Bioanal Chem. 1996. PMID: 15045249

10

Certification of vitamins and carotenoids in SRM 3280 multivitamin/multielement tablets.

Sander LC, Sharpless KE, Wise SA, Nelson BC, Phinney KW, Porter BJ, Rimmer CA, Thomas JB, Wood LJ, Yen JH, Duewer DL, Atkinson R, Chen P, Goldschmidt R, Wolf WR, Ho IP, Betz JM. Sander LC, et al. Among authors: thomas jb. Anal Chem. 2011 Jan 1;83(1):99-108. doi: 10.1021/ac101953u. Epub 2010 Dec 3. Anal Chem. 2011. PMID: 21128589

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